CVE-2023-31470
CVSS v3
9.8
CRITICAL
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.
Technical details
- Published
- 2023-04-28
Frequently asked questions
What is CVE-2023-31470?
SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.
Is CVE-2023-31470 actively exploited?
Active exploitation of CVE-2023-31470 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-31470?
CVE-2023-31470 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2023-31470 affecting your environment?
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